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• Invalid data found when processing input for mp3 file in ffmpeg

  15 juillet 2023, par Sai Chaithanya

  My custom compiled FFmpeg build is unable to read mp3 files, suddenly. Interestingly, the custom compiled FFmpeg build generated the mp3 file. For the past 1 year, it was successfully reading the file. I checked with the official FFmpeg build, and it works, so at least the file is not corrupted.

  


  Official FFmpeg Build output :

  


  ffmpeg version 6.0 Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 11 (Ubuntu 11.3.0-1ubuntu1~22.04.1)
configuration: --arch=x86_64 --target-os=linux --disable-network --enable-small --disable-doc 
               --disable-manpages --enable-static --disable-shared --disable-ffprobe 
               --disable-ffplay --enable-lto --prefix=/home/greninja/Downloads/custom_build 
               --extra-cflags='-I/home/greninja/Downloads/custom_build/include -O3 -flto' 
               --extra-ldflags=-L/home/greninja/Downloads/custom_build/lib
libavutil      58.  2.100 / 58.  2.100
libavcodec     60.  3.100 / 60.  3.100
libavformat    60.  3.100 / 60.  3.100
libavdevice    60.  1.100 / 60.  1.100
libavfilter     9.  3.100 /  9.  3.100
libswscale      7.  1.100 /  7.  1.100
libswresample   4. 10.100 /  4. 10.100
Input #0, mp3, from './test.mp3':
  Metadata:
    major_brand     : dash
    minor_version   : 0
    compatible_brands: iso6mp41
    encoder         : Lavf59.33.100
Duration: 00:03:07.09, start: 0.025057, bitrate: 192 kb/s
Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 192 kb/s
  Metadata:
    encoder         : Lavc59.46
At least one output file must be specified


  


  My Custom FFmpeg build output :

  


  ffmpeg version N-108341-gb1a68127bb Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
configuration: --arch=x86_64 --target-os=linux --disable-everything --disable-network 
               --disable-autodetect --enable-small --disable-debug --disable-doc 
               --disable-manpages --enable-static --disable-shared 
               --enable-decoder='aac*,ac3*,opus,vorbis,mjpeg' 
               --enable-demuxer='mov,m4v,matroska,image2' --enable-protocol=file 
               --enable-muxer='mp3,mp4,webm,null' --enable-libmp3lame 
               --enable-encoder=libmp3lame --enable-filter=aresample --enable-logging 
               --enable-pthreads --enable-parser='vorbis,opus,vp9,vp8,mpegaudio,mpegvideo,mpeg4video,ac3*,aac*,mjpeg,h264' 
               --disable-ffprobe --disable-ffplay --enable-lto 
               --prefix=/home/wade/Downloads/custom_build 
               --extra-cflags='-I/home/wade/Downloads/custom_build/include -O3 -flto' 
               --extra-ldflags=-L/home/wade/Downloads/custom_build/lib
libavutil      57. 36.102 / 57. 36.102
libavcodec     59. 46.100 / 59. 46.100
libavformat    59. 33.100 / 59. 33.100
libavdevice    59.  8.101 / 59.  8.101
libavfilter     8. 49.100 /  8. 49.100
libswscale      6.  8.112 /  6.  8.112
libswresample   4.  9.100 /  4.  9.100
./test.mp3: Invalid data found when processing input


  


  What configuration am I missing ?

  


• FFmpeg help, how should I use FFmpeg ? [closed]

  11 septembre 2023, par Señor Tonto

  I'm trying to use FFmpeg in my code, which is a C++ win32 application that I'm coding from Visual Studio Code 2022. I've downloaded FFmpeg from the BtnB Github that they link in their offical site as a pre-built binary. Now, I got the shared version, as I believed this would both have the command-line .exe app & the normal code headers & libraries. I tried using some code inside of my main.cpp to decode frames from .mp4 files as a test. For some reason though, on launch I got these errors : avcodec-60.dll cannot be found, avformat-60.dll cannot be found, avutil-58.dll cannot be found, swscale-7.dll cannot be found. So now I'm wondering why aren't these provided in the shared code ? there are only dll.a files but no actual .dll files, I also found .def files with the names of the .dll files I am apparently missing, now I want to know why these .dll files aren't provided. Do I need to build from source for that ? Or should I just forget using the .h & .lib files of FFmpeg & use the command-line app ? Any help appreciated.

  


  I want to use FFmpeg, but I can't find any guidance as to whether to use the command-line tool or the code function that aren't working due to the absent .dll filess

  


• FFMPEG : Reconnect not working for HTTP source with UDP output [closed]

  5 octobre 2023, par Quinnell

  I am streaming an audio input with a static video slate. Audio comes from an HTTP source. I output to a multicast IP via UDP.

  


  The stream periodically fails. The process needs to be killed and manually restarted. Would like to have the stream automatically reconnect itself upon failure.

  


  Server runs CentOS 7.
FFMPEG version : ffmpeg version N-107408-g882aac99d2 Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-44)

  


  The server will eventually be replaced with AlmaLinux 8.8 running the latest version of ffmpeg.

  


  Currently experimenting with the RECONNECT option but so far it has failed to restore the stream automatically.

  


  note : IPs and identifying variables have been sanitized.

  


  #! /bin/bash

filename="test1.yuv"
streamTitle="Reconnect_TEST1" # friendly name for stream. Helps when running pgrep
streamInput="100.100.100.100:8002" # Input IP:Port we're receiving on.
multicastOut="232.100.100.100:5500" # Multicast IP:Port we're sending to
logFile=/home/username/logs/${streamTitle}.log # Log file we output the nohup data to.

nohup ffmpeg \
    -re \
    -video_size 854x480 \
    -i $filename \
    -i http://${streamInput} \
    -reconnect 1 \
    -reconnect_at_eof 1 \
    -reconnect_streamed 1 \
    -reconnect_on_network_error 1 \
    -reconnect_on_http_error 1 \
    -reconnect_delay_max 10 \
    -c:a ac3 \
    -ac 1 \
    -af loudnorm \
    -vf loop=loop=-1:size=1:start=0 \
    -c:v libx264 \
    -profile:v main \
    -s:v 854x480 \
    -aspect 16:9 \
    -r 15 -g 30 -bf 0 -crf 30 \
    -fflags +genpts -flags +cgop+ilme \
    -metadata title=$streamTitle \
    -metadata:s:a:0 language=eng \
    -mpegts_flags +pat_pmt_at_frames \
    -flush_packets 0 -threads 1 \
    -v verbose \
    -f mpegts udp://${multicastOut}?pkt_size=1316 \
    -loglevel verbose >$logFile &